The body of the girl, hailing from Banahut area of Jalpaiguri, was returned by the Bhutan police today.
The local people alleged that the girl was raped and then killed as the body has injury marks.
To protest the death of the girl and demanding arrest of the culprits, the local people blocked the Indo-Bhutan road at Chamurchia, police said.
When a police team went to lift the blockade they were attacked by a mob and their vehicles were damaged.
